Raman study of the Hg0.7Cr0.3Sr2CuO4+δ superconductors

Soo Young Lee, Bo Youn Chang, In Sang Yang, Ji Hye Gwak, Sung Jin Kim, Jae Hyuk Choi, Sung Ik Lee, J. V. Yakhmi, J. B. Mandal, B. Bandyopadhyay, B. Ghosh

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The local environment of the apical oxygens (OA) in the Sr-substituted mercury-based superconductor Hg0.7Cr0.3Sr2CuCuO4+δ is investigated using Raman spectroscopy. Raman spectra from the Sr-substituted Hg-1201 samples show broad OA A1g double peaks at 553 and 583 cm-1, which are 10 -20 cm-1 lower than the pristine Hg-1201. The existence of, and lower shift of, the double peaks in the Raman spectra of the Sr-substituted Hg-1201 superconductors indicate changes in the environment of OA in the Sr-substituted mercury-based superconductors.

Original languageEnglish
Pages (from-to)1039-1040
Number of pages2
JournalPhysica C: Superconductivity and its Applications
Issue numberPART 2
StatePublished - Aug 1997

Bibliographical note

Funding Information:
ACKNOWLEDEMENTS: This work was supported by the fund BSRI-96-2428 from the Ministry of Education, and the fund # 961-0207-044-2 from Korea Science & Engineering Foundation.


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